Henry alvin dodge



(No Model.)

H. A. DODGE.

PUMP WRENCH.

110.591,825. l Patented Oct. 19,1897.

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UNITED STAT-ES PATENT OFFICE.

HENRY ALVIN DODGE, OF MILFORD, CONNECTICUT, ASSIGNOR TO THE BOSVORTH MACHINE COMPANY, OF SAME PLACE.

PUM P-WRENCH.

SPECIFICATION forming part of Letters Patent No. 591,825, dated October 19, 1,89'7.

Application tiled February 16, 1897. Serial No. 623,603. (No model.)

Beit known that I, HENRY ALVIN DODGE, a citizen of the United States, residing at Milford, in the county of New Haven, State of Connecticut, have invented certain new and useful Improvements in Pump-Wrenches, of which the following is a full and accurate description, reference being had to the accompanying drawings, in which similar letters indicate like parts in the several views.

The object of my invention is to provide a combined pump and wrench having a hollow pump-body also adapted for use as the handle of a wrench, and a wrench-stem provided at one end with a plunger adapted to traverse the hollow handle, and with a fixed and a movable jaw and a finger-piece for moving the jaw, the parts being arranged to permit the jaws and finger-piece to be housed within the pump-body to some degree when the tool is not being used.

In the accompanying drawings, Figure lis a side view of my new form of pump-wrench ready for use either as a pump or as a wrench. Fig. 2 is a partly-sectional View of the tool with the parts of the wrench housed within the pump-body to some degree. Fig. 3 is a top view of Fig. 2. Fig. 4 is a bottom view of the washer attached to the wrench-stem. Fig. 5 is a bottom sectional view on line 5 5, Fig. 1. Fig. 6 is a top sectional view on line G G of Fig. l.

A is'vthe hollow pump-body, which is preferably elliptical in cross-section and having flattened sides. This form I have found to have features of advantage. It is more convenient than the usual circular tubes for handling and for the pocket of the person yusing it, it aiords a good bracing and guiding means for the plunger, and it is especially advantageous in that it permits the wrench-jaws to be housed in the pump-body without making said body bulky.

One end of the pump-body is closed, and an eduction-port B is formed in that end. Said port is tapped inwardly and threaded Vupon its inner surface. This aitords protection for the threads, and there isno liability of catching or tearing clothing, as in the case of projecting nipples which are exteriorly threaded.

C is the wrench-stem, which is also adapted for use as the piston-rod for the pump. At

the end within the body A it is flattened, and has a plate D, secured by screw E to the Hattened end. The plate holds a washer F in place. Said washer closely ts the interior of the pump-body and corresponds in shape thereto.

G G are segmental bracing-guides carried by the fiattened end of the wrench-stem. These parts brace and' guide the wrench-stem in its longitudinal movements and take up the strain when the stem is extended and the wrench-jaws are gripping a nut. The lattened end of the wrench-stem is bored out at H H, across the guides, and is also cut away at I, wherebythe weight of the tool is reduced.

The wrench-stem is cut away throughout its length, forming a vlongitudinal groove J, the upper portion ofV which'is provided with the ribs K K.' The upper end of the wrenchstem terminates in a iiXed jaw L. An opening M is cut through the wrench-stem just below the commencement of the vribs K.

N is a sliding removable shank provided with a wrench-jaw O and with the ribs P P, fitting in and guided by the ribs K in the stem. Y

Q is the threaded end of the shank.

R is the interiorly-threaded milled fingerpiece, fitted in the opening M and surrounding the threaded end of the shank. The threaded end of the shank is attened on its two opposite sides S S, in order to decrease the thickness of the wrench-stem.

The wrench-stem and the removable shank are both made with attened sides, and the shank is entirely confined'within the lines of the stem, enabling the stem and jaws to be used for removing or tightening nuts or bolts in confined places.

A'When desiring to use the new tool as a wrench, the stem is drawn out, as inFig. l, and the sliding jaw O is projected as far as desired. During the operations of loosening or tightening a bolt or nut the stemis braced within the hollow body by the guidingbraces G.

When the tool is to be used as a pump, the tube Z is secured to the port B, and the opposite end of said tube is screwed into the IOO nipple on the bicycle-tire. Then, by grasping the jaw O of the shank, the wrench-stem and plunger are caused to traverse the hollow pump-body, the air entering at each outward stroke of the stem and being expelled at each inward stroke.

The wrench-stem and shank when closed are preferably about the same length as the hollow body A, and when fully pushed into the body are to some degree housed therein, forming a Very compact tool for the pocket.

I am aware that combined pumps and wrenches have heretofore been made, but in none of the prior forms could the jaws and finger-piece be housed in the pump-body as in my invention.

The open end of the pump-body maybe provided with a cap T, which has an elongated slot U cut therein, said slot being cut away on opposite sides at V V. This cap is secured in place by means of lugs W and screws X.

The finger-piece R and jaws readily pass through the opening in said cap, and the cap acts as a stop against which the guidingbraces G abut, the said braces being wider than the slot at either end. This prevents the accidental withdrawal of the plunger from the hollow body.

At the extremity of the threaded end of the sliding shank N there is formed a blade Y. By means of finger-piece R the shank is projected until it may be slid out of engagement with the ribs K of the stem. Then the blade may be used as a screw-driver.

. Vhile I have herein shown and described one form of pump-Wrench embodying my invention, and which I have found to be advantageous in practice, yet I do not desire to be understood as confining myself to that particular form of the invention, as obviously modifications will readily suggest themselves to skilled mechanics and those modifications still be within my invention.

I do not in this application claim, broadly, the idea of housing a wrench within a hollow wrench-handle, as that feature of invention is made the subject of another application filed by me on May l, 1897-, Serial No. 634,710,

2. In a pump-Wrench, the hollow pumpbody, a wrench-stem arranged to traverse the pump-body, a plunger secured to the end of the stem Within the hollow body, guides secured to the wrench-stem, a fixed jaw, and a movable jaw at the other end of the stem, a linger-piece for operating the movable jaw, and a cap applied to the open end of the pump-body, and having an elongated `open-` ing therein, the stem with the jaws and fingerpiece being arranged to slide into the opening in the cap, substantially as and for the purpose described.

In witness whereof I have hereunto signed my name this 13th day of February, 1897.

HENRY ALVIN DODGE.

In presence of- JoHN LYMAN HIGGINS, JOHN Woon CLAPP. 

